Help??

So I am a week late now. The day my period was supposed to come, i got what I believe is implantation.. it was a small lil bit of pink blood when i wiped for my morning pee (i thought it was my period coming & i got lucky to catch it) so i wore a pad, when i went to change it.. nothing but a small dot of brown spotting was there. & after that, nothing since. No period either. It was so weird and i posted about it but nobody answered me. So now that im a week late and have gotten 3 negatives all spacing out the days, im really confused as to what is going on here. I did a blue dye first, the cheap dollar general next, and then today did first response digital and it said no. I don’t necessarily believe it but can anyone help me figure out why or whats going on? Any personal experiences? Should i wait longer, get a blood test, just let this slide? I don’t necessarily have any noticeable symptoms of pregnancy except the extra tiredness & empty stomach feeling of hunger i got when i was pregnant w my first (i never had any other symptoms with him either) when i found out i was preggers w him, i wanted to nap, and i NEVER nap. Im feeling that way a lot this week & its even harder on me now that i still havent lost my baby weight from him either. (19 months) Anyways... What do you all think??